MCP Datadog Server

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It states 'Creates', implying a write/mutation operation, but doesn't disclose behavioral traits such as required permissions, whether it's idempotent, rate limits, or what happens on failure. The description adds minimal context beyond the basic action, leaving significant gaps in understanding the tool's behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence with no wasted words, making it highly concise. It's front-loaded with the key action ('Creates'), though it could be more informative. Every word earns its place, but the brevity may contribute to underspecification.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (a creation tool for webhooks), no annotations, no output schema, and 0 parameters, the description is inadequate. It doesn't explain what the endpoint does, how it integrates, or what the return value is. For a tool that likely involves configuration and mutation, more context is needed to be complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% description coverage, so no parameters are documented in the schema. The description mentions '<WEBHOOK_NAME>' as a placeholder, implying a parameter, but doesn't specify its type or constraints. Since there are 0 parameters, the baseline is 4, but the description adds some semantic hint (a name for the endpoint), though it's incomplete.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Creates an endpoint with the name <WEBHOOK_NAME>' states a verb ('Creates') and resource ('endpoint'), but it's vague about what type of endpoint and lacks specificity. It doesn't clearly differentiate from sibling tools like 'create_integration_webhooks_configuration_custom_variables' or other webhook-related tools, and the placeholder <WEBHOOK_NAME> is unexplained, making the purpose somewhat unclear.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, context (e.g., when configuring webhooks for integrations), or any exclusions. With many sibling tools, this lack of differentiation leaves the agent without usage direction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.